Bhagavad Gita Chapter 15 Verse 19
भगवद् गीता अध्याय 15 श्लोक 19

यो मामेवमसम्मूढो जानाति पुरुषोत्तमम्।
स सर्वविद्भजति मां सर्वभावेन भारत।।15.19।।



हिंदी अनुवाद - स्वामी रामसुख दास जी ( भगवद् गीता 15.19)
।।15.19।।हे भरतवंशी अर्जुन इस प्रकार जो मोहरहित मनुष्य मुझे पुरुषोत्तम जानता है? वह सर्वज्ञ सब प्रकारसे मेरा ही भजन करता है।


English Translation of Sanskrit Commentary By Sri Shankaracharya's
15.19 Bharata, O scion of the Bharata dynasty; yah, he who; asammudhah, being free from delusion; janati, knows; mam, Me, God, having the aforesaid alifications; purusottamam, the supreme Person; evam, thus, in the way described, as I am this One; sah, he; is sarva-vit, all-knowing- he knows everything through self-identification with all-, i.e. (he becomes) omniscient; and bhajati, adores; mam, Me, existing in all things; sarva-bhavena, with his whole being, i.e. with his mind fixed on Me as the Self of all.
Now then, having stated in this chapter the knowledge of the real nature of the Lord, which has Liberation as its fruit, it is being euligized:


English Translation of Commentary  - Dr. S. Sankaranarayan
15.19 Yo mam etc.  He, who knows Me thus i.e., he who meditates  exclusively on Me as identical with all, and to be the very Brahman - he realises all to be identical with Me and adores (or experiences) Me alone with his entire being viz., his form, action and thought.  [That is to say], whatever he perceives, he experiences it as the form of the Bhagavat ; and so on.  Hence [it has been said]  by myself  (Ag.) in the Sivasaktyavinabhavastotra as :
 
O Mother (Goddess) ! Our praise to You is unusual one ;  all (uttering)   sounds constitute Your body indeed; in my entire body and in all [my] mental and external activities there is Your association.
 
O Siva, O Alleviator of what is inauspicious !  When I fully contemplate in this manner, then it has been accomplished in the world, without any effort  [of mine],  that for me there is indeed not even a small fraction of time without praise, recitation  [of hymns], worship and contemplation [of Yours].


English Translation of Ramanuja's Sanskrit Commentary
15.19 He who, without delusion, knows the Supreme Person as Myself, as already stated, i.e., knows Me, as differing in kind from the perishable and the imperishable Persons, because of My being immutable and because of My being distinguished from them as pervading, supporting and ruling etc., by nature - such a devotee knows all. He knows all that is to be known as the means of attaining Me. He worships Me in every way, i.e., whatever ways of worshipping Me have been prescribed as the means of attaining Me, he worships Me by all these modes of worship. Whatever love is evoked in Me towards one approaching Me by all forms of knowledge having Me for their object, and whatever love is roused up in Me towards those who practise various modes of worship having Me for their object - all that in a unified form is generatd in Me towards one who has the knowledge of Me as described.

Now, Sri Krsna eulogises this knowledge of the Supreme Person:


Transliteration Bhagavad Gita 15.19Yo maamevam asammoodho jaanaati purushottamam;
Sa sarvavidbhajati maam sarvabhaavena bhaarata.


Word Meanings Bhagavad Gita 15.19yaḥ—who; mām—Me; evam—thus; asammūḍhaḥ—without a doubt; jānāti—know; puruṣha-uttamam—the Supreme Divine Personality; saḥ—they; sarva-vit—those with complete knowledge; bhajati—worship; mām—Me; sarva-bhāvena—with one’s whole being; bhārata—Arjun, the son of Bharat